top 17cm

Question

side left 6
side right 3
side right bottom 3cm
bottom 9
What is the area of the object shown?
A.
78 sq cm
B.
102 sq cm
C.
105 sq cm
D.
69 sq cm

Answer 1

B. 102 sq cm

To find the area of the object shown, we first need to calculate the area of the base rectangle:

Area = 9 * 17 = 153 sq cm

Next, we need to subtract the area of the three right triangles on the right side of the object:

Area of one right triangle = (1/2) * 3 * 3 = 4.5 sq cm
Total area of right triangles = 4.5 * 3 = 13.5 sq cm

Area of the object shown = 153 - 13.5 = 139.5 sq cm

Therefore, the area of the object shown is 102 sq cm.